Channeling machine



Feb. 9, 1937. E. E. OLSON 2,069,922

CHANNELING MACHINE Filed March 14, 1936 2 Sheets-Sheet 1 Inventor and a; ,5 I A ttomeys Feb. 9, 1937. E O ON CHANNELING MACHINE Filed March 14, 1936 2 sheets-sheet 2 M mm M V 5 A Home}; 5

{ T ifle Eric E. Olson, New ees, N. r. Application March 14, 1936,8rial No. cases This invention relates to machines or devices for channeling work, and an object of the present invention is to provide a machine particularly designed for channeling concrete structures, building units and the like.. 1

An object of the invention is also to provide a device for the purpose above mentioned in the form of a hand device which can be readily' and easily manipulated; and further to provide in such a device means for controlling the cutting depth of the channeling blade by regulating the pressure on the tool. A

The invention together with its objects and advantages will be 'best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure 1 is a bottom plan view of the tool with a cover plate for the motor, gearing, etc.,'removed.

tha device.

: forming part of the invention. and

Figure 6 is a perspective view of a cuttingor channeling blade.

Referring to the drawings by reference numerals it will be seen that the device, in the preferred embodiment thereof is constructed in the form of a hand tool and comprises a casing 5 of suitable shape and dimension. .is preferably formed from a single casting to provide a relatively wide com eat 6 and a relatively narrow compartmen I, the compartments running for substantially the full length of the device and opening through the of the hood or casing.

At oneend of the hood a portion thereof is removed to provide a discharge I for dust or the like which would otherwise tend to accumulate within the chamber or compartment 1.

- ,type oi?v cutting or channeling blade may be used.

The hub 9 of the channeling wheel is suitably Figure 2 is a sectional view through device. Figure 3 is a transverse sectional view through.

The casing.

(in. sea-2c) secured on a shaft that extends transversely of! the chamber or compartment 1 and has its respective opposite ends suitably channeled in an outer side of the hood or casing 5 and the partition wall it common to the compartments 6 and 7.

One end of the st i5 extends into the com- 1 partment 6 and secured to said end of the shaft is a bevel gear it which is in mesh with a bevel gear I9 on the ature shaft of an electric motor 2Q.

i throughthe medium of saddle straps or brackets 2| which at their respective ends are bolted or otherwise secured as it 22 to 11135 or the like 23 provided on the opposed walls of the chamber vIi. From the above it will be seen that drive will be transmitted from the motor 20 through the gearlngs i9, it to the shaft 15 for revolving the cutting or channeling wheel, and obviously as the wheel revolves the pointed knife edges of the blades will cut into the work for cutting a channel or groove into the work.

To protect the motor 20 and the gearing there is provided for the bottom open side of the chamher or compartment 6 a transversely curved closure plate 24 the edges of which are slidably received in grooves 25 provided therefor in the opposed walls of the compartment 6 so that the cover plate 24 may be readily slid into and out of position as will be clear from -a study of Fig- 4 me 3. i I

For lubricating 'purposes therer are provided in the lower edges of the walls in'which the ends of shaft l5 are journalled grease sockets 26 pro- -vided with closure plugs 21 and ports 28 through the latter, it being apparent, the grease passes into the bores receiving the ends of the shaft l5 for maintaining the ends in a well lubricated condition.

The outer side walls of the hood or casing 5 are notched and removably secured within the notches are frames or housings 28 secured through the medium of screws 29 as clearly shown in Figure 5.

Skids a have a working fit within the casings 45 or housings 28 and at their inner ends are provided with stems 3| that work in'suitable guide bores 32 provided in said, side walls-of the hood 5. Springs 33 are disposed about the pins 3i and act on the skids 39 to normally urge the same outwardly and into engagement with the surface. of the work.

.Outward or downward movement of the skids 30 is limited by reason of the projections 34 on the skids and the projections 25 that project in- 10 Electric motor 29 is suspended within the wardiy from opposite ends of the frames at the lower ends of the frame as also shown in Figure 5.

It will thus be seen that the skids 3. support the hood 5 above the work and at the same time will permit the tool to be easily slid along the work during the cutting or channelingoperation.

Also by pressing downwardly on the 'tool the hood 5 and associated parts will move downwardly relative to the skids and in this way the cutting depth of the blades Il may be regulated at will and in accordance with at a hand pres sure on the tool. I

Also to facilitate the handling of the tool there is provided on the top of the hood '5 adjacent one end thereof the transversely extending hand grip 36, and the relatively opposite end thereof a hand grip post 31.

It will be apparent that a tool of this character can be cheaply and economically constructed and will be inexpensive to maintain and can be readily used as a hand tool for channeling work such as stone, masonry, wood, or the like.

Having thus described the invention, what is claimed as new is: 1

1. A channeling tool of the .character described comprising a hollow hood having its open side facing downwardly,- 'a channeling wheel rotatably mounted within the hood and having the blades in a manner to permit vertical movement of the thereof adapted to project outwardly through the open bottom of the hood to engage the work, a

facing downwardly, a channeling wheel rotatably mounted within the hood and having the blades thereof adapted to project outwardly through the open bottom of the hood to engage the work, a prime mover mounted within the hood, power transmission means connecting the prime mover with the wheel for'driving the latter, and skids at opposite sides of the hood for supporting the latter above the work, said skids having pins projecting therefrom, and said hood at said sides having sockets receiving said pins .ably mounted within the hood andhaving'the 25 hood relative to the skids to thereby control the digging depth of the cutter wheel blades.

3. A channeling tool ofthe character described comprising a hollow hood having its open side facingdownwar'dly. a channeling wheel rotatably s mounted within the hood and having the blades thereofadapted to project outwardly through the open bottom of the hood to engage the work, a a prime mover mounted within the hood, power of the cutter wheel blades, and spring devices interposedbetween said skidsand the edges of the sides of the hood for yieldably supporting the 20 hood in raised position with respect to the skids.

4. A channeling tool of the character described comprising a hollow hood having its open side facing downwardly, a channeling wheel rotatblades thereof adapted to project outwardlythrough the open bottom of the hood to engage the work, a prime mover mounted within the hood, power transmission-means connecting the prime mover with the wheel fordriving the lat- 30 ter, skids at opposite sides of the hood for supporting the latter above the work, said skids. having pins projecting therefrom, said hood atsaid-sides having sockets receiving said pins in a manner to permit vertical movement of the 3b hood relative to the skids to thereby 'control the digging depth of the cutter wheel blades, spring devices interposed between said skids andthe edges of the sides of the hood for yieldably supl porting the hood in raised position with respect 46 to the skids, and handle means on the top obthe hood to facilitate handling of the tool.

5. In a channeling machine of the class described, skids to facilitate movement of the channeling machine over the surface to be channeled, a hood, resilient means supporting the hood from the skids in a manner to permit vertical'movement of the hood relative to the skids, and channeling mechanism confined within said hood; the depth of the channel being formed by said mech- 50 anism being controllable at will and dependent upon the spacing of the hood vertically with rference to the surface being worked upon.

1 ERIC E. OLSON. 

